To remove the ISS on a smartphone is real

Many astrophotographers try to capture the flight of the ISS across the disk of the Sun. The silhouette of a giant spacecraft is like a large sunspot — theoretically it is easy to photograph it, but it is difficult to do in practice, because the transit of the ISS on the disk lasts a fraction of a second. However, Norman Carlson from Douglas in Arizona (USA) managed to do it using a smartphone.

Carlson noted that there are much more successful images of the ISS flyby, but it can be assumed that not all of them were taken on a mobile camera.

The transit lasts 0.58 seconds, so Carson had to use a video mode with a speed of 30 frames per second and install the phone over the eyepiece of a 6-inch Dobson reflector with a solar filter.

Watching what was happening on the phone screen, he did not see the ISS, but on the computer monitor, with a slowdown, he was able to clearly distinguish the station. As he himself believes, the result for the smartphone camera is quite good.

Attention! Never look at the Sun through a telescope that is not equipped with a special solar filter — this can cause irreversible damage to your vision.